Scientist think that many species have one common ancestor. Which answer choice best tells why scientists think this way?

Group of answer choices

homologous structures

all of the answer choices

the fossil record

vestigial structures

Explain why the word atom was an appropriate term for democritus's idea.

If a mountaintop is 10,000 feet above the valley below we can expect the temperature to be about? A: About 36 degrees F lower B: About 36 degrees F higher C: No change at all, the same D: Its impossible to estimate the change in temperature

What is the electrolysis of calcium hydroxide

When a writer uses "common knowledge" in an essay, why does it NOT require a citation nor is it considered plagiarism?

When acid comes into contact with calcite, the acid bubbles. How can geologists confirm that the rock towers are made of limestone?

If you knew the number of valence electrons in a nonmetal atom, how would you determine the valence of the element?

Which of the following solutions is a good buffer system? Which of the following solutions is a good buffer system? a solution that is 0.10 M HF and 0.10 M LiC2H3O2 a solution that is 0.10 M HC2H3O2 and 0.10 M LiC2H3O2 a solution that is 0.

Which formula shows a substance that is not molecular?

Brainstorm how you could run a pcr reaction if you did not have access to a thermal cycler.

Ch4+br2=ch3br+hbr which type of reaction does this equation represent